Scientific Name:
Crataegus douglasii
Pronunciation:
kruh-TEE-gus dug-LUS-ee-eye
Common Name:
black hawthorn
Family Name:
Rosaceae
Plant Type:
Tree - deciduous
Key ID Features:
Thorns 1-2cm long, reddish-brown; leaves alternate, most blades obovate, 5-7cm long x 4-5cm wide, bi-serrate to slightly lobed, petioles 1-2cm long; flowers white, saucer-shape, May-June; pomes ovoid, reddish maturing black when ripe, about 1cm long. Winter ID: thorns, persistent fruit.
Habit:
Irregular, Spreading, Twiggy, Upright
Form:
Irregular, Round
Texture:
Medium
Mature Height:
7 - 10m
Mature Spread:
5 - 7m
Growth Rate:
Slow
Origin:
B.C. west of Cascades, U.S. - northeast, U.S. - northwest, U.S. - southwest
Hardiness Rating:
Zone 5: (-29 to -23 °C)
Exposure:
Full sun, Part sun/part shade
Soil/Growing Medium:
Rocky or gravelly or dry, Well-drained
Water Use:
Low
Landscape Uses:
Attract birds, Erosion control, Group or mass planting, Herb, Security/barrier, Spring interest, Wildlife food, Woodland margin
Additional Info:
Leaf Morphology:
Form:
Simple, Lobed
Arrangement:
Alternate
Texture/Venation:
Leathery, Pinnate venation
Surfaces:
Pubescent
Colour in Summer:
Green, Dark-green
Colour in Fall:
Green-yellow, Orange, Red
Shapes:
Obovate, Ovate
Apices:
Acute, Rounded
Bases:
Attenuate, Cuneate
Margins:
Double serrate, Pinnately lobed
Additional Info:
Upper surface with widely spaced short hairs, undersides glabrous
Inflorescence Type:
Cyme, Floriferous, Corymb-like
Flower Morphology:
Number Of Petals:
5
Corolla Shape:
Rotate/stellate
Colour (petals):
Showy, White
Flower Scent:
Musky, Unpleasant
Flower Time at Peak:
May
Fruit Type:
Edible, Pome
Fruit Colour:
Purple, Black
Fruiting Time:
Sep, Oct
Additional Info:
Showy, Edible, pome small with less than six one-seeded nutlets
Bark Morphology:
Plated, Multi-stem trunk
Bark or Stem Colour:
Grey
Leaf Bud Type:
Ovoid, Rounded or globular
Leaf Scar Shape:
Crescent shaped
Organ Modifications:
Thorns
Propagation:
Seed, Cuttings
Maintenance:
Low
Pest Susceptibility:
Fungal leaf spot, Rust (Deer resistant, Rabbit resistant, Drought tolerant)
Specific Pests:
Course(s):
- HORT 2355
Location(s):
- (BHE) Boulevard by Hwy. 10 Eastend
- (BHW) Boulevard by Hwy. 10 Westend : 432, 433
- (FSC) Far South Campus
- (JPL) Juglans PLanting : 166, 540
- (TFL) Turf Field Lab
- (WLG) WoodLand Garden